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Fix build errors when C flags include -Werror

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Instructing the compiler to treat warnings as errors caused some of the
compiler tests to fail, because the test code was not 100% clean.

Note that we now use check_symbol_exists() to check for memset() and
memcpy(), since the test code for check_function_exists() produces a
compiler warning due to not including <string.h>.
This commit is contained in:
DRC
2018-03-31 16:19:01 -05:00
parent a74655af45
commit 13e4803e6a
1 changed files with 5 additions and 5 deletions
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10
CMakeLists.txt
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@@ -363,9 +363,9 @@ if(UNIX)
check_include_files(sys/types.h NEED_SYS_TYPES_H)
# Check for functions
include(CheckFunctionExists)
check_function_exists(memset HAVE_MEMSET)
check_function_exists(memcpy HAVE_MEMCPY)
include(CheckSymbolExists)
check_symbol_exists(memset string.h HAVE_MEMSET)
check_symbol_exists(memcpy string.h HAVE_MEMCPY)
if(NOT HAVE_MEMSET AND NOT HAVE_MEMCPY)
set(NEED_BSD_STRINGS 1)
endif()
@@ -375,7 +375,7 @@ if(UNIX)
check_type_size("unsigned short" UNSIGNED_SHORT)
# Check for compiler features
check_c_source_compiles("int main(void) { typedef struct undefined_structure *undef_struct_ptr; }"
check_c_source_compiles("int main(void) { typedef struct undefined_structure *undef_struct_ptr; undef_struct_ptr ptr = 0; return ptr != 0; }"
INCOMPLETE_TYPES)
if(INCOMPLETE_TYPES)
message(STATUS "Compiler supports pointers to undefined structures.")
@@ -433,7 +433,7 @@ if(FORCE_INLINE)
endif()
endif()
foreach(inline ${INLINE_OPTIONS})
check_c_source_compiles("${inline} static void foo(void) {} int main(void) { foo(); }"
check_c_source_compiles("${inline} static int foo(void) { return 0; } int main(void) { return foo(); }"
INLINE_WORKS)
if(INLINE_WORKS)
set(INLINE ${inline})